A) cisternae
B) cristae
C) vesicles
D) tubules
Correct Answer: A
Solution :
Cisternae are the flattened usually unbranched, sac like units of endoplasmic reticulum. These are arranged in stacks or piles parallel to one another and bear ribosomes. Tubules are tubular branched elements of ER, vesicles are oval or rounded, vacuole like elements of ER scattered in cytoplasm, while cristae are the components of mitochondria.
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